• 한국건축시공학회지
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• 제14권5호
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• pp.415-422
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• 2014

본 연구는 공공건축물의 실적공사비 분석을 통해 총공사비에 대한 적정보정율을 기초자료로 제시하고자 한다. 이에 대해 조달청에서 발주한 2009~2011년에 준공된 53개 프로젝트를 연구 대상으로 하였다. 공사비 분석은 주요 공정인 건축, 기계, 전기, 통신, 부대시설에 대하여 빈도론적 관점에서 중위수를 활용한 절대오차율을 기반으로 총공사비에 대해 비교 분석하였다. 이를 통해 적합회귀모형을 선정하고 보정율을 책정하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.149-151
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• 2011

Recently, Architectural Design based on Building Information Modeling(BIM) is popular, construction management based on BIM is necessary. such as Quantity take off, scheduling, and Life Cycle Cost Estimating etc. Therefore, in the study, LCC Estimating using BIM Data, which is extracted from architectural designing process is proposed.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.808-813
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• 2005

Effective cost management requires reliable cost estimates at every stage of project development. The primary purpose of this research is to develop systematic modeling procedures and an automatic computing program for infrastructure estimating in the Texas Department of Transportation (TxDOT). The computing system toggles between project input information and segregated district unit prices for highway work item quantity estimates associated with earthwork and landscape, subgrade treatments and base, surface courses and pavement, structures, miscellaneous construction, and lighting, signing, markings and signals. This quantity-based approach was chosen because of the conventional approach lacking of quantity information until primary design is complete.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.669-675
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• 2009

As the use of new and renewable energy is one of the ways by which the exhaustion of fossil fuels and the other existing environmental problems can be addressed, a policy of spreading information regarding it and of conducting R&D related to it is currently being implemented in advanced countries. In the construction field, the concept of "green building" was born, and the application of this concept has increased, with the end in view of achieving energy savings, resource savings, and recycling, and of conserving the natural environment. In this context, the government of Korea amended the "Law on the Development, Use, and Promotion of New and Recycled Energy" in 2004, which contains 11 provisions related to new and renewable energy and their sources, including solar and geothermal energy as well as sunlight, water, rainfall, and organisms. Since solar-energy should be used instead of fossil fuels by converting sunlight directly into electricity, many researches on this subject are in progress. There are few researches, however, employing the economic approach to the subject. Thus, in this study, an economic assessment of the solar-energy system was conducted using both life cycle cost (LCC) analysis and sensitivity analysis. The results of the LCC analysis show that the solar-energy system will become economically better than the fossil fuel system after 16 years, although the initial construction cost of the solar-energy system is higher than that of the fossil fuel system. The results of this study are expected to be used in selecting an eco-friendly and economical solar-energy system when the construction of a green building is planned.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.662-663
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• 2015

Despite the improvement of productivity and cost, the operating of such equipments yet has been recognized as a 3D business which is a low wage and poor working environment business field. Accordingly, the number of such operators has been decreasing by time. Especially, construction equipment demands higher controlling skills and occasionally involved in critical accidents. Therefore, this study aims to suggest a conceptual design for an construction equipment Around View Monitoring system that visually assists the operator for more efficient operating. It is expected that the application of such technology for a construction equipment highly improves the productivity and work quality, moreover, prevents disastrous accidents that occur to labors.

• 한국건설관리학회논문집
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• 제16권4호
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• pp.21-29
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• 2015

우리나라의 건설공사비지수는 지난 2004년부터 매월 발행되고 있다. 이 지수는 공사비 실적자료의 갱신과 공사비 변동분석, 시장가격의 평가에 직간접적으로 활용되어 왔다. 그런데 이 지수는 한국은행의 산업연관표와 생산자물가지수를 이용하는 가공통계자료이기 때문에, 이들 기초통계 자료에 변화가 있을 경우, 지수 작성모델의 변경이 반드시 필요하다. 최근 한국은행은 생산자물가 지수와 산업연관표의 작성원칙과 기준연도를 변경하였다. 이에 본 연구에서는 최근 변경된 기초통계자료의 내용과 그 영향을 분석하고, 이를 토대로 건설공사비지수를 새롭게 개선하였다. 또한 기존의 생산자물가지수 등과 그 편제 품목 및 가중치 변화 등을 분석함으로써 개선된 지수의 타당성을 검증하였다.

• 한국건설관리학회논문집
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• 제15권2호
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• pp.44-52
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• 2014

2013년 3월 정부에서는 공공공사에 분리발주방식을 확대적용하는 정책을 발표하였다. 분리발주방식의 도입을 두고 건설참여자들의 입장이 첨예하게 대립하게 되고, 건설분야의 뜨거운 이슈가 되고 있는 상황이다. 건설공사 관리의 경험이 부족한 공공발주자가 다수로 분리된 전문공종들을 직접관리하여 인터페이스의 증가에 따른 관리비용 상승, 실적 부족으로 인한 관리비용 산정 기준이 없어 사업운영에 어려움이 있는 현실이다. 따라서, 본 연구에서는 분리발주의 관리비용율 예측할 수 있는 모델을 개발하여 효율적인 분리발주의 운영이 가능하게 하는 것을 목적으로 하고 있다.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.389-396
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• 2005

Despite very good reputation that Korean construction industrial firms had enjoyed until early 1990's in overseas markets, their participation abroad drastically declined after the delivery of two(2) million unit-housing project in the early 1990's and the foreign currency crisis that took place in the late 1990's. The revival of booming construction industry in domestic market is far beyond the expectation due to the long recession of the construction economy and government's severe restriction against real estate development. Under such crucial circumstances, the construction industrial firms' strategy to survive is the more active business promotion in overseas markets. However, the Korean construction industrial firms have to abandon the labor intensive strategy, through that they have enjoyed until the early 1990's, and turn to management oriented strategy which may be a new prosperous horizon and a new challenge as well, because the labor cost of newly developing countries is much more competitive. The aim of this study is to suggest how to cope with current market situations through a chronological survey based on the cost data prevailed during four decades from the 1960's until the 1990's in overseas markets.

• 한국건설관리학회논문집
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• 제16권5호
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• pp.12-20
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• 2015

최근 건설프로젝트는 기존의 노동집약적 현장생산 방식이 아닌, 공장 생산 기반의 현장 조립 방식인 모듈러 건축물에 주목하고 있다. 모듈러 건축 공법은 기존 방식에 비해 공기 단축효과가 높고, 해체 및 재사용이 용이해 임시 주거시설을 중심으로 적용되고 있다. 그러나 모듈러 공법 실현을 위한 초기 투자비용에 대한 부담으로 인해 국내의 모듈러 건축시장은 아직 활성화되지 못하고 있다. 이에 본 연구에서는 모듈러 건축물이 가지고 있는 경제적 부담에 대한 대안으로서 시장의 수요에 따라 이동 가능한 모듈러 건축 방식에 대하여, 기존의 건축 방식과의 생애주기비용 비교를 통해 경제적 효과를 분석하고자 한다. 본 연구에서 분석의 대상으로 삼은 RC 공법과 모듈러 공법의 이동형 모델의 경제성 평가 결과, 단기적인 측면에서는 RC공법이 빠른 수익률을 달성하였지만 건물의 전 생애주기 측면에서는 이동 가능한 모듈러 건축 방식의 경제성이 보다 큰 것으로 나타났다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.602-603
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• 2015

Despite all efforts to reduce construction disaster, construction site accident rate has steadily increased in Korea since 2008. As a different approach from traditional research, there is a growing issue about design for safety concept to prevent construction disaster. The notion is that construction worker's safety need to be considered at design phase, not only at construction phase. Globally, the notion has been noted that to improve the safety of the worker and used in practice. However, in Korea, most of safety management guidelines are limited to construction phase. From recent statistics, only 1.4 percent of designer feel responsible for safety accident at construction site. In this circumstance, this research find out safety guidelines through literatures reviews and practical experience of safety management in other country which apply design for safety concept. Selected guidelines are verified by survey which is evaluated with risk, function, cost, time and aesthetic view categories. Through the survey, define guidelines which could be effectively applied in Korea. By using proposed safety guidelines for design phase, preventing construction accident and improving designer's recognition of safety issue at design phase are expected.